Not necessarily. Your 4kW system corresponds to ~17A at 240V. That means that you will have to feed the AC side of your inverter through a minimum 25A breaker. (It just misses 20A.)
If your main panel is rated for 200A and just has a 125A main breaker in it, you can add up to 115A of backfeed into it without any need to upgrade the panel or your service.
If the main panel is only rated for 125A and has the maximum allowed 125A main breaker installed, then you can still feed 25A back into it, but that will be the upper limit.
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More questions. My main breaker is rated 125A. If I get a 4KW install, do I need to upgrade my main panel?Leave a comment:
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I'm in Femont too...
Most installers in a 30 mile radius should be willing to provide quotes.
I've received 5-6 quotes so far from Berkeley to Campbell.
The answers to you questions are IMO not simple one liners.
You'll have to trawl the forums for old posts to settle on the right answers.Leave a comment:
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Newbie looking at solar install in Fremont, CA
After talking to Solar City, I've decided that I'll go with reputable local installers. I don't like the PPA stuff as it does not allow me to easily expand my installation over time. Using 7000KWh per year, I'm thinking of going for 3500-3700W installation with micro inverters to deal with some shading and ease of expansion. I have a composite shingle roof looking south.
Questions:
- Are Enphase better, or are all micro inverters created equal?
- Solar panels, should I care about brands?
- What's a realistic price per Watt pre incentives for a complete install?
So far, I'm relying on Yelp to find installers. Any recommendation is welcome.
Leave a comment: